﻿#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>

int main()
{
	int killer = 'a';
	for (killer = 'a'; killer < 'd'; killer++)
	{
		if (((killer != 'a') + (killer == 'c') + (killer == 'd') + (killer != 'd')) == 3)
		{
			printf("凶手是：%c\n", killer);
			break;
		}
	}
	return 0;
}